BACKGROUND Well-adapted and validated quality-of-life measurement models for the nursing home population are scarce. Therefore, the aim of this study was to test the psychometrical properties of the OPQoL-brief questionnaire among cognitively intact nursing home residents. The research question addressed evidence related to the dimensionality, reliability and construct validity, all of which considered interrelated measurement properties. METHODS Cross-sectional data were collected during 2017-2018, in 27 nursing homes representing four different Norwegian municipalities, located in Western and Mid-Norway. The total sample comprised 188 of 204 (92% response rate) long-term nursing home residents who met the inclusion criteria: (1) municipality authority's decision of long-term nursing home care; (2) residential time 3 months or longer; (3) informed consent competency recognized by responsible doctor and nurse; and (4) capable of being interviewed. RESULTS Principal component analysis and confirmative factor analyses indicated a unidimensional solution. Five of the original 13 items showed low reliability and validity; excluding these items revealed a good model fit for the one-dimensional 8-items measurement model, showing good internal consistency and validity for these 8 items. CONCLUSION Five out of the 13 original items were not high-quality indicators of quality-of-life showing low reliability and validity in this nursing home population. Significant factor loadings, goodness-of-fit indices and significant correlations in the expected directions with the selected constructs (anxiety, depression, self-transcendence, meaning-in-life, nurse-patient interaction, and joy-of-life) supported the psychometric properties of the OPQoL-brief questionnaire. Exploring the essence of quality-of-life when residing in a nursing home is highly warranted, followed by development and validation of new tools assessing quality-of-life in this population. Such knowledge and well-adapted scales for the nursing home population are beneficial and important for the further development of care quality in nursing homes, and consequently for quality-of-life and wellbeing in this population.

中文翻译：

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评估老年人的生活质量：养老院人口中OPQoL简短问卷的心理计量学特征。

背景技术缺乏用于养老院人口的经过良好调整和验证的生活质量测量模型。因此，本研究的目的是在认知完好的疗养院居民中测试OPQoL简短调查表的心理计量学特性。该研究问题涉及与尺寸，可靠性和构造效度有关的证据，所有这些都考虑了相互关联的测量特性。方法在2017年至2018年期间，在位于挪威西部和中部的27个疗养院收集了横断面数据，这些疗养院分别代表四个不同的挪威市政当局。总样本包括符合纳入标准的204名长期疗养院居民中的188名（92％答复率）：（1）市政府对长期疗养院的决定；（2）居住时间3个月以上；（3）负责任的医生和护士认可的知情同意能力；（4）能够接受采访。结果主成分分析和确认因素分析表明是一维解决方案。最初的13个项目中有5个显示了较低的信度和效度；如果排除这些项目，则表明该模型非常适合一维8个项目的测量模型，显示出这8个项目的良好内部一致性和有效性。结论13个原始项目中有5个不是高质量的生活质量指标，在该养老院人口中显示出较低的信度和效度。重大因素负荷，拟合优度指标以及与所选结构的预期方向上的显着相关性（焦虑，抑郁，自我超越，生活意义，护士与患者的互动，和生活乐趣）支持OPQoL简短问卷的心理测量特性。居住在疗养院时，探索生活质量的本质是非常有必要的，然后开发和验证评估该人群生活质量的新工具。此类知识和适应性良好的护理院规模对于护理院护理质量的进一步发展是有益且重要的，因此对于该人群的生活质量和福祉也很重要。